US4963405A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape for encasing electronic parts
Assignee: 3M Co
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Filing: 1989-07-20
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Granted: 1990-10-16
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Expires: 2009-07-20
Abstract
Abstract Tape for encasing electronic parts comprising a carrier tape having a plurality of recesses for encasing electronic parts and a plurality of guide perforations, and a cover tape pasted onto said carrier tape with an adhesive so as to seal only said recesses while leaving said guide perforations open.
Inventors
- 👤 Shunsuke Yamashita
- 👤 Norihito Kondoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:37
CPC Classifications
H; H05; H05K; H05K13/00; H05K13/003; C; C09; C09J; C09J7/00; C09J7/20; C09J7/22; C09J7/30; C09J7/35; Y; Y10; Y10S; Y10S428/00; Y10S428/901; Y10S428/906; Y10T; Y10T428/00; Y10T428/14; Y10T428/1438; Y10T428/1443; Y10T428/23; Y10T428/239; Y10T428/24; Y10T428/24802; Y10T428/24851; Y10T428/2486; Y10T428/28; Y10T428/2804; Y10T428/2813; Y10T428/2817; Y10T428/2826; Y10T428/2835; Y10T428/2839; Y10T428/2848; Y10T428/2852; Y10T428/2878; Y10T428/31504; Y10T428/31725; Y10T428/31739; Y10T428/31743; Y10T428/31746; Y10T428/31855; Y10T428/31935
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
157 words
A tape for encasing electronic parts, comprising a carrier tape made from a material selected from the group consisting of paper, aluminum, and thermoplastic resin and having a plurality of recesses for encasing electronic parts and a plurality of guide perforations, said carrier tape having a cover tape pasted thereon with an adhesive in such a way as to seal only the recesses for electronic parts, while leaving the guide perforations open, said cover tape being a nylon-based resin sheet and said adhesive being an ethylene-vinyl acetate copolymer-based adhesive, the peeling adhesivity between the carrier tape and the cover tape being in a range of not more than 70 gf (g/0.6 mm width) and not less than 10 gf (g/0.6 mm width) both at the initial stage and after heat aging at 60° C. for 24 hours, and the difference between maximum peeling adhesivity and minimum peeling adhesivity being not more than 35 gf (g/0.6 mm width).
Claim 2
Dependent Claim
157 words
A tape for encasing electronic parts, comprising a carrier tape made from a material selected from the group consisting of paper, aluminum, and thermoplastic resin and having a plurality of recesses for encasing electronic parts and a plurality of guide perforations, said carrier tape having a cover tape pasted thereon with an adhesive in such a way as to seal only the recesses for electronic parts, while leaving the guide perforations open, said cover tape being a nylon-based resin sheet and said adhesive being an ethylene-vinyl acetate copolymer-based adhesive, the peeling adhesivity between the carrier tape and the cover tape being in a range of not more than 70 gf (g/0.6 mm width) and not less than 10 gf (g/0.6 mm width) both at the initial stage and after heat aging at 60° C. for 24 hours, and the difference between maximum peeling adhesivity and minimum peeling adhesivity being not more than 35 gf (g/0.6 mm width).
Claim 3
Dependent Claim
36 words
A tape according to claim 1, wherein said cover tape is made of a member selected from the group consisting of nylon 6, nylon 66, nylon 610, nylon 11, and copolymers of the foregoing nylon polymers.
Claim 4
Dependent Claim
27 words
A tape according to claim 1, wherein said ethylene-vinyl acetate copolymer-based adhesive comprises 70 to 95% by weight ethylene and 5 to 30% by weight vinyl acetate.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-10-15 | 1994-04-16 | 1994-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-15 | 1998-04-16 | 1998-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-15 | 2002-04-16 | 2002-10-16 | $7700.00 | Window Closed / Lapsed |